METHOD FOR PURIFYING POLYETHER POLYOLS MADE WITH DOUBLE METAL CYANIDE CATALYSTS
A method for purifying polyether polyols made with double metal cyanide (DMC) catalysts is disclosed. A poly(oxypropylene) polyol containing DMC catalyst residues is combined with an amount of an alkali metal compound sufficient to convert DMC residues to an insoluble species, but not sufficient to...
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